Tobias,
good point at the right time.
We just had to make the experience that after changing the database scheme
(using the Oracle Designer) the numbering of the relations changed, i. e.
what was relation1 in the recent reengineering run was now relation2. I
don't blame Cayenne with this, I guess it's on the Oracle side when
regenerating the schema - Cayenne just consumes the FK attributes as they
come.
However, this prevents us from having some kind of database model
roundtrip. Really nasty.
This is really nasty because we put quite some work into extending the
reverse engineering feature of the modeler (haven't posted this to the list
yet, however).
- We wanted the method names to look like getPainting instead of
getToPainting and getPaintingList instead of getPaintingArray or such.
- We wanted to strip auto-generated attribute name prefixes from the object
entity attributes (Oracle Designer is really great in this :-()
- Also, we had requirements such as singularizing table names (e. g.
PAINTINGS table -> Painting object entity, also considering exceptions like
ADDRESSES -> Address o.e.).
- An additional point was automatically generating sequence definitions
when reverse engineering the database in order to achieve some kind of
database model roundtrip when changing the database scheme.
I made some extensions to 1.2M10 that address these issues. They can be
easily customized using a properties file and allow for custom strategy
classes to be specified (e. g. for creating sequence generator
definitions).
I think this mechanism could be extended to suit your needs.
However, two suggestions:
- I would want the mechanism that inserts the attribute name only become
active when there is more than one relation from the source entity to a
particular target entity.
- Rules for automatically stripping prefixes should be applied to the
attribute name before inserting it into the relation name
Let me see what I can do.
I will post our changes (maybe including a solution to your problem if I
can find the time) to the list during the next days.
Andrus or some other core developer might include them in the CVS version
if they like them.
-- Heiko ErhardtTobias SCHOESSLER <Tobias.Schoessle..nvienna.org> schrieb am 14.02.2006 09:49:56:
> > hi, I sent this before, am not sure if it got through, I could't find my > post in the archives, so excuse me if it is a repost. > > I am not happy with the generated code for some of my databases structures > ... > > If a tableA has more than one foreign key relationship to the same other > tableB the generated getToTableB methods look like this. getToTableB1, > getToTableB2, getToTableB3 ... > Wouldn't it be better to have these methods named after the attribute of > the destination foreign key? if the foreign key attributes are attrA, > attrB, attrC. something like getToAttrATableA, getToAttrBTableB, ... > > This way If you have speaking attributes the relationship is much better > described. getToBadPainting, getToGoodPainting. A possibility would also to > pick up the name of the Constraint used to describe the foreign key > relation ... > > I tried to change this with a custom vl template but had problems getting > to the destination attribute from a Relationship ,,, maybe this should be > done somewhere else anyway... when the Realtionship's name is created > during reverse engineering process. > > I know the mapping can be changed manually, but I am trying to minimize the > manual work to be done to the mapping after reverse engineered. > > > > ______________________________________ > Tobias Schoessler, Java Developer > Information Management Unit > Information Technology Service > United Nations Office on Drugs and Crime > > Tel: (+43-1) 26060-5173 > Websites: www.unov.org, www.unodc.org > ______________________________________ > Impossible is not a fact, only an opinion >
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